GALAXY EVOLUTION FROM “DIS”INTEGRATED LIGHT

Galaxy Evolution from Primordial Fluctuations

The forwards approach to galaxy formation and evolution is extremely powerful but leaves several questions unanswered. Foremost among these is the origin of disks. A backwards approach is able to provide a more realistic treatment of star formation and feedback and provides a practical guide to eventually complement galaxy formation ab initio.

Galaxy Evolution from the Deep2 Galaxy Redshift Survey

The DEEP2 Galaxy Redshift Survey is now well underway, having already measured the redshifts to ∼5600 galaxies in its first season of observations. Here I briefly review the survey itself, before discussing in more detail some of the initial science results to have recently appeared in the literature. In particular, the potential of the survey to characterize galaxy evolution is discussed, with...

Photometric Redshift Biases from Galaxy Evolution

Proposed cosmological surveys will make use of photometric redshifts of galaxies that are significantly fainter than any complete spectroscopic redshift surveys that exist to train the photo-z methods. We investigate the photo-z biases that result from known differences between the faint and bright populations: a rise in active galactic nucleus (AGN) activity toward higher redshift, and a metal...

Constraints on Galaxy Structure and Evolution from the Light of Nearby Systems

We review knowledge of galaxy structures obtained by their emitted light and in the local universe where they can be studied in great detail. We discuss the shapes of, and stellar motions within, galaxies, compositional clues derived from their spectra, and what luminous matter implies about their dark matter content. Implications on the current theory of hierarchical galaxy formation are explo...

Galaxy Evolution